NJ7P SQL Tube Database Query

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6211
Medium-Mu Twin Triode

EIA Base & Outline

Mechanical Data

EIA Outline ................................... 6-2
EIA Base ...................................... 9A

Electrical Data

Heater Voltage ................................ 12.6/6.3 V
Heater Current ................................ 0.15/0.3 A

Direct Interelectrode Capacitances (approx)

Triode 1
Input ......................................... 2.9 pf
Output ........................................ 0.54 pf
Grid to Plate ................................. 2.22 pf

Triode 1
Input ......................................... 2.9 pf
Output ........................................ 0.46 pf
Grid to Plate ................................. 2.22 pf

Maximum Ratings (Design Center Values)

Triode 1
Plate Voltage ................................. 200 V
Plate Dissipation ............................. 1.5 W

Triode 1
Plate Voltage ................................. 200 V
Plate Dissipation ............................. 1.5 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 100 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 470 Ω
Amplification Factor .......................... 27
Plate Resistance (approx) ..................... 7500 Ω
Transconductance .............................. 3600 µ
Plate Current ................................. 4.6 mA

If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.

(c) 1994-2021 by William A. Beech, NJ7P

Fri, 03 Feb 2023 01:01:50 -0700